Which header files should be included actually when using with conan?

[apollomok]

I copy and paste the "include" part from a code.

// ryml can be used as a single header, or as a simple library:
#if defined(RYML_SINGLE_HEADER) // using the single header directly in the executable
    #define RYML_SINGLE_HDR_DEFINE_NOW
    #include <ryml_all.hpp>
#elif defined(RYML_SINGLE_HEADER_LIB) // using the single header from a library
    #include <ryml_all.hpp>
#else
    #include <ryml.hpp>
    // <ryml_std.hpp> is needed if interop with std containers is
    // desired; ryml itself does not use any STL container.
    // For this sample, we will be using std interop, so...
    #include <ryml_std.hpp> // optional header, provided for std:: interop
    #include <c4/format.hpp> // needed for the examples below
#endif

However, I got lots of error like this:

/root/.conan2/p/b/rapidfaf59bb62cfc8/p/include/c4/yml/common.hpp:617:5: error: there are no arguments to ‘C4_UNREACHABLE_AFTER_ERR’ that depend on a template parameter, so a declaration of ‘C4_UNREACHABLE_AFTER_ERR’ must be available [-fpermissive]
  617 |     C4_UNREACHABLE_AFTER_ERR();